diff --git a/pyproject.toml b/pyproject.toml
index b734078..c1442ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool.isort]
 force_grid_wrap = 0
 include_trailing_comma = true
+known_third_party = ["MarkupPy", "odf", "openpyxl", "pkg_resources", "setuptools", "tablib", "xlrd", "xlwt", "yaml"]
 line_length = 88
 multi_line_output = 3
 use_parentheses = true
-
diff --git a/src/tablib/__init__.py b/src/tablib/__init__.py
index e94e939..1d9d505 100644
--- a/src/tablib/__init__.py
+++ b/src/tablib/__init__.py
@@ -1,6 +1,5 @@
 """ Tablib. """
 from pkg_resources import DistributionNotFound, get_distribution
-
 from tablib.core import (
     Databook,
     Dataset,
diff --git a/src/tablib/formats/_xls.py b/src/tablib/formats/_xls.py
index d405c77..3fc94af 100644
--- a/src/tablib/formats/_xls.py
+++ b/src/tablib/formats/_xls.py
@@ -3,11 +3,10 @@
 
 from io import BytesIO
 
+import tablib
 import xlrd
 import xlwt
 
-import tablib
-
 title = 'xls'
 extensions = ('xls',)
 
diff --git a/src/tablib/formats/_xlsx.py b/src/tablib/formats/_xlsx.py
index 6774ef1..6ac46b9 100644
--- a/src/tablib/formats/_xlsx.py
+++ b/src/tablib/formats/_xlsx.py
@@ -4,7 +4,6 @@
 from io import BytesIO
 
 import openpyxl
-
 import tablib
 
 Workbook = openpyxl.workbook.Workbook
diff --git a/src/tablib/formats/_yaml.py b/src/tablib/formats/_yaml.py
index 54b635e..3707876 100644
--- a/src/tablib/formats/_yaml.py
+++ b/src/tablib/formats/_yaml.py
@@ -1,9 +1,8 @@
 """ Tablib - YAML Support.
 """
 
-import yaml
-
 import tablib
+import yaml
 
 title = 'yaml'
 extensions = ('yaml', 'yml')
diff --git a/tests/test_tablib.py b/tests/test_tablib.py
index 2f37fdb..00b8214 100755
--- a/tests/test_tablib.py
+++ b/tests/test_tablib.py
@@ -8,9 +8,8 @@ import pickle
 import unittest
 from uuid import uuid4
 
-from MarkupPy import markup
-
 import tablib
+from MarkupPy import markup
 from tablib.core import Row, detect_format
 from tablib.formats import _csv as csv_module